隧道工程下穿土质城墙沉降变形控制标准的理论研究  

Theoretical study on settlement control standard of tunnel crossing the earth wall

作　　者：张世光 Zhang Shiguang(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi'an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《工程勘察》2023年第12期35-39,共5页Geotechnical Investigation & Surveying

摘　　要：随着我国隧道工程技术的蓬勃发展,在建(构)筑物密集区、重要文物保护区内采用隧道形式穿越已成为可能,对于隧道建设者来说,如何在复杂环境下确保重要建(构)筑物的安全一直以来都是地下工程面临的重要课题,现有控制标准的研究主要围绕地基变形对上部结构的耐久性影响展开,而从结构自身材料及内力出发,对结构变形控制标准的研究较少。本次研究以山西某隧道穿越土质城墙工程为背景,针对城墙材料的特点结合弹塑性理论及Peck沉降槽原理建立起地层变形与结构内力之间的关系式,并推导出能够真实反映穿越建筑物受力情况的沉降控制标准,根据数值模拟及现场实测分析加以验证,为后续相似工程提供参考的同时也为其他研究人员提出一种新的思路。With the vigorous development of tunnel engineering technology in our country,it is possible that tunneling project through the densely built areas or important cultural relics protection areas.For tunnel builders,how to ensure the safety of upper structures in complex environments is always an important issue.The existing control standards mainly focus on the influence of foundation deformation on the durability of superstructure.However,there are few researches on the control standards of structural deformation from the perspective of the materials and internal forces of the structure itself.This study is based on a tunnel project which crossing the soil city wall in Shanxi,the relationship between the stratum deformation and the structural internal force is established,which combines with the characteristics of city wall materials,elastic-plastic theory and Peck settlement trough principle,and the settlement control standard that can truly reflect the stress of crossing buildings is derived.It is verified by using numerical simulation and field measurement analysis,which provides the reference and a fresh idea for similar projects in the future.

关 键 词：沉降控制标准 土质城墙 隧道下穿工程 

分 类 号：TU433[建筑科学—岩土工程]